(CNN) -- Rafael Nadal and Novak Djokovic had luck on their side Friday at the Miami Masters. The fans there were less fortunate.

The top two in the world will meet in a dream Sunday final -- after both of their semifinal opponents pulled out pre match.

For the second time during the tournament, world No. 2 Djokovic didn't need to hit a ball to advance in the draw.

His third-round opponent, Florian Mayer, was a walkover because of a groin injury and the Serb progressed Friday after Kei Nishikori withdrew -- with a groin injury.

Former Wimbledon finalist Tomas Berdych was then unable to take on Nadal in the second semifinal due to a stomach illness, leaving spectators with no singles action to watch.

Nishikori had upset 17-time grand slam champion Roger Federer in the quarterfinals Wednesday and 2013 Miami finalist David Ferrer in a three-hour battle a day earlier.

Japan's 'rock star' tennis pro

The hard-hitting Japanese baseliner, who trains in Florida, was bidding to reach his maiden Masters final.

"Very sorry to say that I have to pull out today," the 21st-ranked Nishikori said on his Facebook page. "Very disappointed and I am obviously very sorry for any fans that wanted to come out for this match.

Very sorry to say that I have to pull out today. Very disappointed and I am obviously very sorry for any fans... http://t.co/drquupL4BB